Arne Ludwg, Ruhr-University Bochum (image) Ruhr-University Bochum Share Print E-Mail Caption The quantum dots were developed by Arne Ludwig and his collegues in Bochum. Credit © RUB, Marquard Usage Restrictions This image may only be used for reporting about the Ruhr-Universitaet Bochum in the context of the press release "Researchers achieve resolutions in the 30 nanometre range" published in January 2018. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.